Help what should I do?

Kimber • Stepmom to one👩‍👧Pregnant with Baby #1🤰🏼 Due Jan 2020.

I took all these last week now there are is only one line showing on the tests I take first thing in the mornings. AF was supposed to be here 7-20, and didn't show. Last night I noticed like spotting that was brown, and today it seems like Flo is here, but it's not enough to soak a pad and it's kinda rusty. HELP!!! I don't go for a possible prenatal visit til 8-2.